Because three of my children are at the school, ds1 also sent there (now at high school) and I know lots of parents that he'll and I do get involved in stuff I can is baking etc but as I have always had a baby/toddler at home I haven't been able to do much.
I see the school as a community tbh and for it to thrive and be a place where children do well I think parental involvement is important. I don't just want to drop my child off, I do want to be involved in their education.
Not that you have to be and we can't all help but every little bit helps from baking cakes to things like volunteering to help sort the schools veg garden, or tidy and sort the library books. (Just some of the things parents help with at our school) oh and redecorating the pool changing rooms, all done by parent volunteers and the children drew designs to be stencil led on the walls (under sea theme obviously!). There was lots of fundraising and people volunteered time and donated paintbrushes, paint etc. All sorts of little things and all contributions are equally valued. But it really helps create a community feel iyswim? And the children have a real sense if pride that they were involved in the process.
And yes it should be funded but with limited budgets and constant cut backs and teachers stretched already if they can get parents to help with some things that's a good thing.
Its the same with pre-schools parents are involved in fundraising and helping out. Nobody has to but if you can I think it makes sense to try.
And schools can't win it seems, either they aren't friendly enough etc or they expect too much re volunteering, cakes, dress up days etc. They are trying to do well by our children and I want to support them in that when I can.